One more thing to add to this - looking at reviews on the ESR Camera protectors (which I bought but probably will return without installing) is they fog up with temperature changes. This exact same thing happens with screw-on lens filters on traditional cameras when you walk from a cold area to warm area, for example. So it appears the lens protectors are not making a proper seal with the camera lens itself, and the last thing you want is moisture trapped between the protector and the lens. There was another review stating they damaged their phone trying to peel them off.
I guess at the end of the day, most phones these days have large camera arrays, and most people just use normal cases without any dedicated camera protection - you don't read about many people damaging their camera lanses. With the right case, they are pretty far recessed anyway, so even in your pocket or whatever, there will be little to no contact.
I can't seem to find exactly what Samsung uses on the front of their lenses, but I assume it's the same Gorilla Glass Victus as the rest of the phone (I would like to confirm).
Facebook
Twitter
Instagram